diff --git a/build.gradle b/build.gradle
index ac28ec7dbabb4b0e3339afdcad09911844bc4709..0f9092b9eb097e5db5cf85bcaad15a9fcd1eb693 100644
--- a/build.gradle
+++ b/build.gradle
@@ -73,7 +73,7 @@ repositories {
 dependencies {
     compile group: 'org.jdom', name: 'jdom2', version: '2.0.6'
     compile group: 'com.apple', name: 'AppleJavaExtensions', version: '1.4'
-    compile group: 'io.github.lukehutch', name: 'fast-classpath-scanner', version: '2.20.2'
+    compile group: 'io.github.lukehutch', name: 'fast-classpath-scanner', version: '2.21'
     //testCompile group: 'junit', name: 'junit', version: '4.12' // TODO enable tests
 }